Awkward interaction

Yesterday I saw an acquaintance I hadn’t seen for a while and for some reason I got terribly awkward around them. Eventually didn’t know what else to say and we were basically staring at each other laughing awkwardly. Didn’t even give a proper send off, it was horrible. I’ve been overthinking this so much since yesterday. I feel silly even asking, but should I send them a text and apologise? Or should I just let it pass and they’ll probably forget? Have you guys had a similar situation? Thanks in advance